US Democratic presidential nominee John Kerry on Tuesday stepped up his attacks on President George W. Bush's economic record, saying than Bush's economic policy has resulted in the loss of US jobs.

"Because of George Bush's wrong choices, this country is continuing to ship good jobs overseas -- jobs with good wages and good benefits," Kerry said at a rally in Greensboro, North Carolina.

"All across America, companies have shut their doors, putting hardworking people out of a job, leaving entire communities without help or hope," he said.

He also criticized Bush's tax policy which give tax breaks to US companies that ship jobs overseas and said that he would close the tax loophole.

The United States has lost about 1 million jobs since Bush became the president in 2001 although US job market has been improving this year. And the US jobs market was seen by many analysts as one of the weak spot for President Bush..

The US major newspapers have reported that former President Bill Clinton had advised Kerry last week that he must sharpen his criticism of President Bush's record and offer voters a more compelling case in his own behalf if he hopes to win presidential election in November.

Source: Xinhua